Chair



y 1967 1 c. w. HARRISON, JR 3,331,634

CHAIR Filed Sept. 23, 1965 I 4 Sheets-Sheet 1 FIG. 11 I l INVENTOR.

CLYDE W HARP/SON,c/R

, ATTQRNEES y 1967 1 c. w. HARRISON, JR 3,33

CHAIR Filed Sept. 23, 1965 4 Sheets-Sheet 5 I NVEN TOR.

w v CLYDE WHARR/5ON,t/E

A 7' TOR/v5 5 United States Patent Filed Sept. 23, 1965, Ser. No.489,512 3 Claims. (Cl. 297442) This invention pertains to a childs chairand more particularly to a collapsible chair constructed of fiberboardor the like.

Prior art childrens collapsible chairs are in general very fragile andwill not withstand very much abuse. These prior art chairs generallyconsist of one or two layers of a fiberboard, such as cardboard or thelike, the pieces of which are attached together by some extra means suchas screws, clips, etc. Besides being fragile many of these prior artchairs are extremely complicated to assemble and require additionaltools and materials.

In the present device a first blank, which may be composed of cardboardsuch as 200 pound B. Flute board, has a plurality of cuts and scorelines therein. This first blank is folded to form a substantiallybox-shaped structure the bottom of which is locked together in astandard fashion Well known to those skilled in the art of box making.One of the sides, braced by'portions of the adjacent sides, extendsupwardly a substantial distance above the remaining three sides to formthe back rest of the chair. All of the edges fold over to form bracesand to interlock with the remainder of the chair, which will beexplained presently, to hold the entire assembly rigidly in position. Aplurality of blanks are used internally within the box-like structureand the back rest has braces to strengthen the entire assembly. A blankis then interlocked with the first blank to hold the braces and thefirst blank rigidly in place and to form a portion of the seat and theportion of the back rest immediately adjacent the seat.

Thus, the present chair is constructed entirely of cardboard or the likeand is assembled in a manner so as to be extremely sturdy. In addition,the various parts of the present chair are completely interlocking and,therefore, no additional materials or tools are required in the assemblythereof. As an added feature the outer surfaces of the chair may becoated with a plastic material to waterproof the chair and to provide afinish from which dirt and the like can be easily removed.

It is an object of the present invention to provide a new and improvedcollapsible childs chair.

It is a further object of the present invention to provide blanks whichwhen assembled take the form of a chair that is extremely sturdy.

It is a further object of the present invention to provide a collapsiblechair which is easily and quickly assembled without the use ofadditional tools or materials.

It is a further object of the present invention to provide a childschair which is inexpensive and simultaneously extremely sturdy.

These and other objects of this invention will become apparent to thoseskilled in the art upon consideration of the accompanying specification,claims, and drawings.

Referring to the drawings, wherein like characters indicate like partsthroughout the figures:

FIG. 1 is a view in perspective of the present chair completelyassembled, parts thereof broken away;

3,331,534 Patented July 18, 1967 FIG. 2 is a pattern view of a blankwhich forms the main frame of the present invention;

FIG. 3 is a pattern view of the blank which forms a portion of the seatand back rest of the present inventron;

FIG. 4 is a pattern view of a blank which forms an internal brace in thepresent invention;

FIG. 5 is a pattern view of a blank which forms an internal brace in thepresent invention;

FIG. 6 is a pattern view of a blank which forms an internal brace in thepresent invention;

FIG. 7 is a view in perspective of the blank illustrated in FIG. 2partially assembled;

FIG. 8 is a view inperspective of the blank illustrated in FIG. 2completely assembled;

FIG. 9 is an exploded view in perspective of the blanks illustrated inFIGS. 4-6 illustrating their folded and interlocking positions;

FIG. 10 is a view in perspective of the assembly illustrated in FIG. 9positioned within the assembly illustrated in FIG. 8;

FIG. 11 is a view in perspective of the blank illustrated in FIG. 3folded for insertion into the assembly illustrated in FIG. 10;

FIG. 12 is a sectional view as seen from the line 12-12 in FIG. 1;

FIG. 13 is a sectional view as seen from the line 13-13 in FIG. 12,parts thereof broken away and shown in sections;

FIG. 14 is a sectional view as seen in the line 1414 in FIG. 13; and

FIG. 15 is a bottom view of the present invention.

In the figures the numeral 10 generally designates the first blank whichforms the basic frame of the chair when correctly folded. The firstblank 10 is somewhat rectangular shaped and is composed of four sectionsnumbered from left to right in FIG. 2, 11, 12, 13 and 14. The adjoiningedges of each of the sections 11 through 14 are defined by score lines15, 16, and 17 respectively. The score lines 15-17 are substantiallyparallel and extend vertically to eventually form three of the cornersof the chair while the fourth corner is formed by the outer edges, theleft edge being designated Bend the right edge defined by a score line19 having a small substantially rectangular tab 20 extending the lengththereof and utilized to aid in maintaining the blank in the assembledposition. Each of the sections 11-14 has a tab 21-24 respectivelyattached to the lower edge thereof and separated therefrom by scorelines 25-28 respectively.

In the assembly of the present invention the first blank 10 is foldedalong each of the score lines 15, 16, 17 and 19 to form a substantiallybox like structure with the tab 20 lying parallel to the section 11 andadjacent thereto. The tab 20 may be attached to the inner surface of thesection 11 by gluing, stitching, etc. or it may be constructed so thatit is interlocking and, thereby, holds itself in position. Each of thetabs 21-24 are bent upwardly perpendicular to their respective sectionsand interlocked to form a bottom as illustrated in FIG. 15. Since thisis a common locking bottom well known to those skilled in the boxindustry, it will not be discussed further.

In the assembled chair the section 11 forms the front thereof while thesection 12 forms the left side, the secare connected to the upper edgethereof are .mirror images of each other and, therefore, only theconstruc tion of the section 14 will be elaborated upon. Referring toFIG. 2 the upper edge of the section 14 is defined by a score line whichextends from the upper end of the score line 19 towards the score line17 and downwardly at a slight angle to the perpendicular of score line19. The score line 30 extends inwardly a substantial distance where itjoins a score line 31 that extends upwardly at'an angle to the scoreline 30 somewhat greater than 90. The score line 31 is inclined at anangle toward the score line 17 and extends upwardly to within a shortdistance of the score line 17 where it is cut off along an edge 32 whichis substantially perpendicular to the 'score line 31. The portion of thesection 14 defined by 'the score lines 17 and 31 and the edge 32 forms aside of the back rest of the chair and extends a considerable distanceabove the score line30 which forms a side of the seat portion of thechair. A tab generally designated 14 along the score line 31. The upperedge of the tab 35 is formed by a continuation of the edge 32,previously explained. The outer edge 36 of the tab 35 is substantiallyparallel to the score line 31 and spaced therefrom. The tab 35 has a cut37 therein substantially perpendicu lar to the outer edge 36 andextending inwardly therefrom a short distance. The cut 37 in combinationwith the edge 32 and the edge 36 form a somewhat squareshaped ear 38. Ascore line 39 extends from the junction ofthe score lines 30 and 31substantially perpendicular to the score line 30 to the inner end of thecut 37. The lower edge of the tab 35 is defined by a cut 40 whichextends outwardly and upwardly from the junction of the score'lines 30and 39 at approximately a angle to the score line 39. The cut 40 extendsoutwardly a substantial distance after which it bends at an angle andcontinues to the edge 36 along a line approximately parallel to thescore line 30. The edge 36 and the score line 39 converge toward theupper end of tab 35 at an angle approximately equal to the convergingangle between the score lines 17 and 31, which define the portion ofsection 14 forming the side of the back rest. Therefore, when tab 35isbent at approximately a 90 angle along score 3 lines 31 and 39 theedge 36, except for ear 38, is in abut ment with the section 13 and theentire flap 35 acts as a support for. the back rest while interlockingwith remaining portions as will be described presently.

A tab generally designated 45 is attached to the section 14 along thescore line 30. The tab 45 has a first score line 46,"spaced from thescore line 30 approximately twice the width of the material being usedfor the blank, that extends from the cut 40, which forms a portion ofthe left edge of the tab 45, to the right edge of the tab 45. Therightedge of-the tab 45 extends from the score line 19 upwardly andslightly inwardly to allow the tab 45 to clear the section 11 when thetab 45 and the section 11 are folded into place. The score lines 30 and46 are spaced apart a' sufficient distance to allow the tab 45 to besubstantially parallel and adjacent to the section 14 when the materialis bent at approximately90 along each of the score lines 30 and 46.

A second score line 47 is substantially parallel to the score line 46and spaced therefrom a distance approxi- 'mately equal to or slightlyless than the thickness of a cushion or the like which it is desired toplace on the seat of the present chair. The portion of the tab 45between the score line 46 and 47 lies parallel and adjacent 35 isattached to the section.

to the section '14 when the'tab 45 is properly folded and acts 'as aridge along one side of the seat which 'holds a cushion or the likefixedly in place as will be explained presently. The score line 47extends from approximately the end of the cut 40 to the right edge ofthe tab 45.

The right edge of the tab 45, after turning inward slightly asexplained, extends approximately perpendicular to the score line 46 pastthe score line 47 to 'a score line 48, which is parallel to the scoreline 47 and spaced therefrom a distance slightly smaller than one-thirdof tab 45 extend upwardly in a parallel relationship but form an anglewith the score line 48 which is approximately twice the angle which thescore line 30 forms with the vertical score line 19. The upper end ofthe tab 45 is terminated in an edge 49 which extends from the left tothe right edge of the tab 45 and is approximately perpendicular thereto.3

Because of the angle which the left and right edge of the tab 45 makewith the. score line 48, when the tab 45 is properly folded the upperedge 49 thereof is par allel to and in abutment with the "bottom of thestructure. Thus, with a bend at each of the score lines 30, 46, 47 and48 the first portion of the tab 45 is substantially horizontal, thesecond portion of the tab 45 between score lines 46 and 47 issubstantially vertical and parallel to the section 14, the third sectionof the tab 45 between the score lines 47 and 48 is substantiallyhorizontal and forms a portion of the seat and the fourth'portion of thetab 45 between the score lines 48 and the upper edge 49 forms asubstantially vertical brace for the portion of the seat just described.The .tab 45 has a slot 50 therein'located approximately centrallybetween the left and right edges thereof'and extending from the scoreline 47 to a distance approximately half way between the score line 48and the upper edge 49. All parts attached to section 12 which aresimilar to parts attached to section 14 will be given similar numberswith a prime added to denote the similarity.

The section 13 is substantially rectangular in shape with the upper edgedefined by a score line 55 which extends from the score line 16 atapproximately the end of the edge 32' to the score line 17 atapproximately the end of the edge 32. The score lines 16 and 17 extendvertically upward past the score line 55 a short distance to a scoreline 56 which is parallel to the score line 55 and spaced therefrom. Thedistance between the score line 55 and the score line 56 isapproximately equal to the distance between the score line 17 and thescore line 31 at the edge 32. A pair of small tabs 57 and 58 are locatedat either end of the portion of section 13 between the score lines 16and 17 and the score lines 55 and 56. The upper edge of each of the tabs57 and 58 is an extension of the score line 56 and the lower edge isparallel and adjacent to the edges 32 and 3250f the tabs 35 and 35. Theouter edges join the upper and lower edges-of the tab and are parallelto the score lines 16 and 17.

A score line 59 is spaced from the score line 56 a distanceapproximately equal'to the distance of the cut I 37 from the upper edge32 on the tab 35. The left and right edges 60 and 61 respectively of theportion between the score lines 56 and 59 extend from the upper limitsof the score lines 16 and 17- to. the score line 59 at an inwardlysloping angle of approximately 45. An upper edge 62 is parallel to thescore line 59 and spaced there- The upper edges of each of the tabs 65and 66 are defined by an extension of the edge 62 while the outer edgeslie along an extension of the score lines 16 and 17 respectively. Thelower edges of the tabs 65 and 66 ex tend from the outer ends of thescore line 59 outwardly and downwardly at an angle to the score line 59which is approximately equal to the angle between the score lines 17 and31. Thus, the tabs 65 and 66 are similar to a small portion of thesection 14 lying between the score lines 17 and 31 and are designed toultimately lie parallel thereto.

In folding and assembly of the first blank the small tabs 57 and 58 arebent inwardly at 90 to the plane of the section 13. The upper portion ofthe section 13 is bent along the score line 55 slightly less than 90toward the front of the chair. The tabs 35 and 35' are then bentinwardly along the score lines 31 and 31' and the outer portions thereofare bent outwardly toward the front of the chair in a reverse bend alongthe score lines 39 and 39' so that the upper portion of the section 13may be bent along the score lines 56 and 59 about the small ears 38 and38' at the upper end of the larger tabs 35 and 35'. During this bendingprocess the tabs 65 and 66 at the upper end of the section 13 are bentat approximately 90 to the portion between the score line 59 and theupper edge 62. The tabs 35 and 35 are then bent inwardly along the scorelines 39 and 39 so that they overlie the tabs 65 and 66 and the entireassembly is fixedly inter locked as illustrated in FIG. 8.

A tab generally designated 70 is connected to the upper edge of thesection 11 along a score line 71 which is perpendicular to the edge 18thereof. A second score line 72 is parallel to the line 71 and spacedtherefrom approximately twice the thickness of the first blank 10. Theleft and right edges of the portion between the score lines 71 and 72are angled slightly toward each other to allow for the folding of thetab 70 into the structure. A score line 73 is parallel to the score line72 and spaced therefrom a distance equal to or slightly less than thethickness of the cushion which is placed on the seat. The left and rightedges of the portion between the score lines 72 and 73 are parallel andperpendicular to the score lines 72 and 73. A score line 74 is parallelto the score line 73 and spaced therefrom a distance substantially equalto the distance between the right edge of the tab 45 and the slot 50centrally located therein. The edges of the tab 70 extend in a parallelrelationship perpendicular to the lines 72 and 73 past the line 74 asubstantial distance to an upper edge 75 of the tab 70. The tab 70 has apair of parallel spaced apart cuts 76 and 77 extending downwardly fromthe upper edge 75 to approximately the center thereof. When the tab 70is properly folded into the structure the portion between the scorelines 73 and 74 lies horizontal and forms the front portion of the seatwhile the portion between the score line 74 and the upper edge 75 liesperpendicular to the bottom with the edge 75 in abutment therewith. Thecuts 76 and 77 interlock with the slots and 50 respectively to maintainthe entire structure in the folded position illustrated in FIG. 8.

FIG. 4 illustrates a second blank generally designated 80 which isutilized as an internal brace under the seat and back rest. Blank 80 hasa substantially rectangular shape with a bottom 81 perpendicular to twospaced apart ends 82 and 83. The upper edge of blank 80 extends inwardlyfrom each of the sides 82 and 83 along lines 84 and 85 respectivelywhich extend inwardly and upwardly at a slight angle to the ends 82 and83. Portions 86 and 87 of the upper edge extend downwardly perpendicularto the lines 84 and 85 and from the ends thereof. A portion 88 completesthe upper edge, extending from the end of the line 86 to the end of theline 87 and lying parallel to the bottom edge 81. The angles between theedges 82 and 86 and the edges 83 and 87 are equal and are approxi matelyequal to the angle between the score lines 17 and 31 of section 14.

The blank has a pair of score lines 89 and 90 perpendicular to the loweredge 81 and spaced apart an approximately equal distance from the centerthereof. A pair of parallel spaced apart cuts 91 and 92 extenddownwardly from the portion 88 of the upper edge, approximatelyperpendicular thereto and adjacent the junction of the edges 86 and 87therewith. The edge 86 has two parallel spaced apart cuts 93 and 94therein which are spaced at short distance from the extreme upper edge84 and parallel thereto. The cuts 93 and 94 are of different lengths andextend into the blank 80 approximately equal distances from the leftedge 82. Two cuts 95 and 96 are substantially mirror images of the cuts93 and 94 and extend into the blank 80 from the edge 87. In assembly theblank 80 is folded along the score lines 89 and 90 so that the portionbetween the left edge 82 and the score line 89 is substantially parallelto the portion between the right edge 83 and the score line 90 asillustrated in FIG. 9.

A third blank generally designated 100 is substantially rectangular inshape and has a lower edge 101 which is parallel to the upper edge 102.Two spaced apart substantially parallel cuts 103 and 104 extend from thelower edge 101 to approximately the center of the blank 100. The cuts103 and 104 are spaced apart and of a length to mate with the cuts 91and 92 in the upper edge 88 of the blank 80. When the cut 103 is placedin the cut 91 and the cut 104 is placed in the cut 92 the upper edge 102of the blank 100 is approximately in a plane with the edge 88 of theblank 80 while the lower edges 101 and 81 are also in a plane.

A fourth blank generally designated is substantially rectangular inshape with the upper edge 111 parallel to the lower edge 112. The blank110 has two substantially parallel spaced apart score lines 113 and 114approximately centrally located thereon and parallel to the edges 111and 112. The left edge 115 of the blank 110 is perpendicular to theedges 111 and 112 from the edge 112 to the score line 114 and from theedge 111 to the score line 113 while the portion between the score lines113 and 114 lies at an angle to the perpendicular portions which isapproximately equal to the angle between the score lines 17 and 31 ofthe section 14. The right edge 116 of the blank 110 is a mirror image ofthe left edge 115. The blank 110 has two parallel spaced apart cuts 117and 118 extending downwardly to approximately midway from the upper edge111 to the score line 113 and two parallel spaced apart cuts 119 and 120extending upwardly to approximately midway from the lower edge 112 tothe score line 114. When the blank 110 is folded along the score lines113 and 114 so that the section between the upper edge 111 and the scoreline 113 is parallel to the section between the lower edge 112 and thescore line 114, the cut 117 mates with the cut 93 in the blank 80, thecuts 118 and 95 mate, the cuts 119 and 94 mate and the cuts 120 and 96mate as illustrated in FIG. 9. When the three blanks 80, 100 and 110 areassembled as illustrated in FIG. 9 the entire assembly is placed Withinthe assembled blank 10, illustrated in FIG. 8, as illustrated in FIG.10. Thus, the three blanks 80, 100 and 110 form internal interlockingbraces for the seat and back rest portions.

A fifth blank illustrated in FIG. 3 has a lower rectangular portion 126having a lower edge 127, left and right edges 128 and 129 respectivelyand an upper edge defined by a score line 130. The portion 126 also hasa pair of parallel spaced apart cuts 131 and 132 extending upwardly toapproximately midway from the lower edge 127 to the score line andperpendicular thereto. The portion 126 of the blank 125 is substantiallysimilar to the blank 100. Blank 125 has a second rectangular portion 135adjacent the portion 126 and attached thereto along the score 130. Theleft and right edges of the portion 135 are extensions of the edges 128and 129 of the portion 126. The upper edge of the portion 135 is definedby a score line 136 which is parallel to and the same length as thescore line 130. A third portion 137 of the blank 125 has a lower edgedefined by the score line 136. The left and right edges of the portion137 are defined by score lines 138 and 139 respectively'which extendupwardly and inwardly from the junctions of the score line 136 with theedges 128 and 129 respectively. The angles which the score lines 138 and139 make with the edges 128 and 129 are substantially equal to the anglebetween the score line 17 and the score line 31 of the section 14. Theupper ends of the score lines 138 and 139 are connected by a score line140 which is parallel to the score line 136. The edges defined by thescore lines 138, 139 and 140 each have a tab 141, 142 and 143 attachedthereto, respectively. The tab 141 is shaped to overlie the major partof the tab 35' lying between the score line 39' and the edge 36'. Thetab 142 is a mirror image of the tab 141. The tab 143 is substantiallyrectangular shaped and is approximately the same width as the portion ofsection 13 between the score line 59 and the upper edge 62.

The blank 125 is folded as illustrated in FIG. 11 so that the sections126 and 135 are approximately perpendicular and the tabs 141, 142 and143- are approximately perpendicular to the section 137. The section 137is folded along the score 136 so that it lies at an angle to the section135 which is approximately equal to the angle between the score line 17and 31 of the section 14. The folded blank 125 illustrated in FIG. 11 isthen assembled in'the assembly illustrated in FIG. so that the cuts 131and 132 of the blank 125 mate with the slots 56 and 50' of the blank 10.The portion 135 of the blank 125 lies parallel and forms the rearportion of the seat while the portion 137 extends upwardly therefrom andforms a portion of the back rest. The tabs 141, 142 and 143 of the blank125 are parallel and adjacent the portion of the tab 35 between thescore line 39' and the edge 36', the portion of the tab 35 between thescore line 3-9 and the edge '36 and the portion of the section 13between the score line 59 and the upper edge 62 respectively.

When the entire structure is assembled a rectangular shaped cushion 150or the like may be placed on the seat as illustrated in FIG. 1. Aspreviously mentioned this cushion may be of a thickness equal to orslightly greater than the distance between the score lines 46-47 and72-73, which, as can be seen in the figures, provide a ridge along thesides and front of the seat to accommodate a cushion such as 150.

Thus, a childs chair is disclosed which may be constructed completely ofa foldable fiberboard, such as cardboard or the like, and which iseasily assembled without the use of extra tools, fasteners, etc. Thevarious blanks of the chair are completely interlocking and maintain thechair rigidly in its assembled position. In addition, the chair has agreat many braces and the like along the edges and internally to make itextremely rugged and durable.

While I have shown and described a specific embodiment of thisinvention, further modifications and improvements will appear to thoseskilled'in the art. I desire to be understood, therefore, that thisinvention is not limited to the particular forms shown and I intend inthe appended claims to cover all modifications which do not depart fromthe spirit and scope of this invention.

1 claim:

1. A blank for a childs collapsible piece of furniture comprising:

(a) a generally rectangular piece of foldable material having fourparallel spaced apart score lines extending substantially from the loweredge to the upper edge;

(b) a plurality of interlocking tabs extending outwardly from said loweredge and having a score line at the junction of said tabs and said loweredge extending in a substantially straight line along said lower edgesubstantially perpendicular to said parallel score lines;

8 '(c) said rectangular piece folding along said parallel score lines toform a four-sided box-shaped structure with a'portion overlapping forpurpose of affixing said piece in said folded position and saidinterlock:

ing tabs folding inwardly to form a bottom which interlocks to hold saidtabs in the folded position; (d) substantially rectangular shaped tabsextending upwardly from score lines Which define the upper V edges oftwo opposite sides, each of said rectangular shaped tabs having scorelines and a substantially centrally located slot therein and eachfolding inwardly and downwardly to form braces within said structurewith said slots lying in a plane perpendicular to the bottom and saidopposite sides;

(e) one of said remaining sides having a substantially rectangularshaped tab extending upwardly from a score line which defines the upperedge thereof with a plurality of spaced apart score lines extendingsubstantially parallel to the outer edge thereof and two spaced apartparallel cuts extending inwardly from said outer edge, said lastmentioned tab folding so said cuts mate with said slots to interlocksaid structure firmly in position and so a portion of said lastmentioned tab lies substantially horizontal to form a portion of a seat;

(f) a portion of the fourth side of said four sided structure extendingupwardly a substantial distance above the three sides having rectangularshaped tabs attached thereto and having at least one tab extendingupwardly from the upper edge thereof and additional tabs extendingoutwardly from said upwardly extending tab, said upwardly extending tabhaving cuts and score lines therein to facilitate folding said 7 tabinwardly to form a relatively wide, reinforced portion having agenerally rectangularly shaped cross section and positioned adjacent theupper edge of said fourth side; and

(g) said two opposite sides each having upwardly directed extensionsjoined to the upwardly extending portion of said fourth side along theparallel spaced apart score lines between said two opposite sides, saidfourth side and each of said extensions having at least one tabextending outwardly from the outer edges thereof, said outwardlyextending tabs joined to said extensions having cuts and score linestherein to facilitate folding said tabs inwardly to form a relativelywide reinforced portion having a generally rectangularly shaped crosssection and positioned adjacent outer edges of said fourth side, andsaid reinforced portion adjacent either outer edge of said one sideinterlocking with said additional tabs of the relatively wide reinforcedportion at the upper edge of said fourth side to maintain the foldedpositron.

2. A collapsible childs chair comprising a first blank constructed andassembled as set forth in claim 1 and having in addition a secondsubstantially rectangular shaped blank having two parallel spaced apartcuts in one end thereof adapted'to mate with said slots in saidrectangular shaped tabs extending from said two opposite sides when'inthe folded position and having a plurality of score lines substantiallyperpendicular to said cuts in said second blank to facilitate foldingand interlocking said second blank with said first blank so that aportion thereof is substantially horizontal and forms a portion of saidseat and a portion thereof is somewhat vertical and cooperates with saidfourth side of said first blank to form a back rest, said second blankfurther having a plurality of tabs thereon attached to the back restportion which interlock with said fourth side to maintain said secondblank in the folded position.

3. A collapsible childs chair as set forth in claim 2 having in additiona plurality of internal blanks which interlock with the first and secondblanks to form braces;

(References on following page) References Cited UNITED STATES PATENTSRichards.

Lanth et a1 29716 Parrott 297-457 Rowe 297442 Volland 297-442 Smith297442 Holden 297442 Holden 297442 Smith 297442 Lyles 297442 Smith eta1. 297442 DAVID J. WILLIAMOWSKI, Primary Examiner.

FRANK B. SHERRY, FRANCIS K. ZUGEL, Examiners.

1. A BLANK FOR A CHILD''S COLLAPSIBLE PIECE OF FURNITURE COMPRISING: (A)A GENERALLY RECTANGULAR PIECE OF FOLDABLE MATERIAL HAVING FOUR PARALLELSPACED APART SCORE LINES EXTENDING SUBSTANTIALLY FROM THE LOWER EDGE TOTHE UPPER EDGE; (B) A PLURALITY OF INTERLOCKING TABS EXTENDING OUTWARDLYFROM SAID LOWER EDGE AND HAVING A SCORE LINE AT THE JUNCTION OF SAIDTABS AND SAID LOWER EDGE EXTENDING IN A SUBSTANTIALLY STRAIGHT LINEALONG SAID LOWER EDGE SUBSTANTIALLY PERPENDICULAR TO SAID PARALLEL SCORELINES; (C) SAID RECTANGULAR PIECE FOLDING ALONG SAID PARALLEL SCORELINES TO FORM A FOUR-SIDED BOX-SHAPED STRUCTURE WITH A PORTIONOVERLAPPING FOR PURPOSE OF AFFIXING SAID PIECE IN SAID FOLDED POSITIONAND SAID INTERLOCKING TABS FOLDING INWARDLY TO FORM A BOTTOM WHICHINTERLOCKS TO HOLD SAID TABS IN THE FOLDED POSITION; (D) SUBSTANTIALLYRECTANGULAR SHAPED TABS EXTENDING UPWARDLY FROM SCORE LINES WHICH DEFINETHE UPPER EDGES OF TWO OPPOSITE SIDES, EACH OF SAID RECTANGULAR SHAPEDTABS HAVING SCORE LINES AND A SUBSTANTIALLY CENTRALLY LOCATED SLOTTHEREIN AND EACH FOLDING INWARDLY AND DOWNWARDLY TO FORM BRACES WITHINSAID STRUCTURE WITH SAID SLOTS LYING IN A PLANE PERPENDICULAR TO THEBOTTOM AND SAID OPPOSITE SIDES; (E) ONE OF SAID REMAINING SIDES HAVING ASUBSTANTIALLY RECTANGULAR SHAPED TAB EXTENDING UPWARDLY FROM A SCORELINE WHICH DEFINES THE UPPER EDGE THEREOF WITH A PLURALITY OF SPACEDAPART SCORE LINES EXTENDING SUBSTANTIALLY PARALLEL TO THE OUTER EDGETHEREOF AND TWO SPACED APART PARALLEL CUTS EXTENDING INWARDLY FROM SAIDOUTER EDGE, SAID LAST MENTIONED TAB FOLDING SO SAID CUTS MATE WITH SAIDSLOTS TO INTERLOCK SAID STRUCTURE FIRMLY IN POSITION AND SO A PORTION OFSAID LAST MENTIONED TAB LIES SUBSTANTIALLY HORIZONTAL TO FORM A PORTIONOF A SEAT; (F) A PORTION OF THE FOURTH SIDE OF SAID FOUR SIDED STRUCTUREEXTENDING UPWARDLY A SUBSTANTIAL DISTANCE ABOVE THE THREE SIDES HAVINGRECTANGULAR SHAPED TABS ATTACHED THERETO AND HAVING AT LEAST ONE TABEXTENDING UPWARDLY FROM THE UPPER EDGE THEREOF AND ADDITTIONAL TABSEXTENDING OUTWARDLY FROM SAID UPWARDLY EXTENDING TAB, SAID UPWARDLYEXTENDING TAB HAVING CUTS AND SCORE LINES THEREIN TO FACILITATE FOLDINGSAID TAB INWARDLY TO FORM A RELATIVELY WIDE, REINFORCED PORTION HAVING AGENERALLY RECTANGULARLY SHAPED CROSS SECTION AND POSITIONED ADJACENT THEUPPER EDGE OF SAID FOURTH SIDE; AND (G) SAID TWO OPPOSITE SIDES EACHHAVING UPWARDLY DIRECTED EXTENSIONS JOINED TO THE UPWARDLY EXTENDINGPORTION OF SAID FOURTH SIDE ALONG THE PARALLEL SPACED APART SCORE LINESBETWEEN SAID TWO OPPOSITE SIDES, SAID FOURTH SIDE AND EACH OF SAIDEXTENSIONS HAVING AT LEAST ONE TAB EXTENDING OUTWARDLY FROM THE OUTEREDGES THEREOF, SAID OUTWARDLY EXTENDING TABS JOINED TO SAID EXTENSIONSHAVING CUTS AND SCORE LINES THEREIN TO FACILITATE FOLDING SAID TABSINWARDLY TO FORM A RELATIVELY WIDE REINFORCED PORTION HAVING A GENERALLYRECTANGULARLY SHAPED CROSS SECTION AND POSITIONED ADJACENT OUTER EDGESOF SAID FOURTH SIDE, AND SAID REINFORCED PORTION ADJACENT EITHER OUTEREDGE OF SAID ONE SIDE INTERLOCKING WITH SAID ADDITIONAL TABS OF THERELATIVELY WIDE REINFORCED PORTION AT THE UPPER EDGE OF SAID FOURTH SIDETO MAINTAIN THE FOLDED POSITION.